Amanda Bynes won't be walking down the aisle after all -- she and her fiance of just 3 weeks have called off their engagement. AB's groom-to-be, Paul Michael, confirmed the news Sunday ... telling In Touch they had, in fact, broken up. He added he still loves Amanda, though, and considers her his best friend. Word of their split comes after Amanda recently cleared her social media pages of any photos of her and Paul together, which led some to believe they'd parted ways. She hasn't spoken on the split herself yet, and the reason for things coming undone remains unclear.